Abstract
IntroductionCholedochal cyst is an uncommon congenital disease of the biliary tract in the UK. There are five main types of choledochal cyst with several recognised sub-types. However, occasional variants do occur.Case presentationWe report a case of a female infant with an antenatally diagnosed choledochal cyst. The operative cholangiogram revealed an unusual intrahepatic biliary tree. The cyst was successfully excised and the infant is well at 18-months follow up.ConclusionThe anatomy should be clearly defined before surgical excision as abnormal variants can occur, which usually do not fit into the known classification types and subtypes.
Highlights
Choledochal cyst is an uncommon congenital disease of the biliary tract in the UK
The anatomy should be clearly defined before surgical excision as abnormal variants can occur, which usually do not fit into the known classification types and subtypes
Anatomical configurations, which do not readily fall into the Todani modification, have been described. We report one such case in a 7-month female infant with antenatally diagnosed choledochal cyst, which does not fit into this classification system
Summary
Choledochal cysts are congenital abnormalities of the biliary system and consist of cystic dilatations of the extrahepatic biliary tree, intrahepatic biliary ducts or both. Anatomical configurations, which do not readily fall into the Todani modification, have been described We report one such case in a 7-month female infant with antenatally diagnosed choledochal cyst, which does not fit into this classification system. It was reported to be a hepatic cyst or a choledochal cyst but with features not characteristic of either She remained asymptomatic and once the diagnosis of a choledochal cyst was confirmed, an elective excision of the cyst was performed at the age of seven months. A large 5 cm × 4 cm × 2 cm cyst was found at the level of the porta hepatis with normal hepatic and common bile duct (Figure 1) which did not fit with any of the current recognised classification types.
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